Coupling for sucker rods



sepio 16, im. www5 l W. D. GII-ES COUPLING FOP` sUcKER Rom Filed June 4, 1923 `2 Sheets-Shea?. l

releases seal. le, resa l 25"; I l

construe ron suenan noos.

application filed Enne 4, 19.23 Serial No.' 643,474.

T o all whom it may cof/warn p Be it known that l, WALTER D. GrLns, a

citizen of the 'United States, residing at Leesville, in the parish of Vernon and State o Louisiana, have invented certain new and useful Improvements in a Coupling for Sucker Rods, of which the following is a specification.

The, present invention relates to a coupling for sucker rods and has for its principa object to provide a simple and efficient device of this nature which will be reliable and durable.

Another important object ofthe invention is to provide a coupling having means for preventing the same from becoming accidentally disengaged or unfastened and at the. same time provided with antifrictionmeans to engagethe well casing.

Another obj'ect of the invention is to provide a coupling which is easily assembled and disassembled and which may be made at a comparatively low cost.

With the above and numerous other objects in' view as will appear as the descripf tion progresses, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed. v

In the drawing- Figure l isa perspective view showing my coupling,

Figure 2 is a side elevation thereof,

Figure 3 isa section taken substantially on the line 3-3 of Figure 2 looking in the direction of the arrow, and l Figure 4 is a vertical section through the. coupling. v

Referring to the drawing in detail it will be seen that 1 designates a saddle which I have shown and described in detail in .my

i pending application hearing Serial Number- 629,645, iiled April 3, 1923. A polish rod 2 is supported by the saddle 1' and is connected to a sucker rod 3. My novel coupling is disposed' between the rods 2 and` 3 'and-a similar coupling is disposed between all of the sucker rods,

This coupling consists of a female member and a male member. .in attached to the bottom ofthe rods while the mele member is attached to the top ends- 4 vided with the block 4 l claim as new is Tiie female member the' bottom end oi rod 2 is provided with a square block portion 4 which may be engagcd by a Wrench for screwing the cou-4 pling together. At the bottom of this block 4 there is disposed an internally threaded socket 5. The rod 3 at its upper endv is prosimilar to block 4 previously described and a head 7 is mounted onthe block and is provided witlra refv duced threaded stud S which is adapted to be screwed into the socket Two pairs of spaced ears i) are provided on the head 7 at diametrically opposed points so that' arms l() may be pivoted-therein. These arms 10 have inwaigd extensions or hooks 1l at their ends for engagementv with the shoulder l2 formed by the upper end of thevsocket 5.

extensions 11 engage the shoulders-12 and thus it is not possible to unscrew the socket from the stud. Antifriction devices in the form of rollers 13 are journaled on the outer edges of the arms 10 for engagement with the well casing as is indicated in Figures 1 and 4 by the dotted line structure. These rollers also prevent. any wobbling tendency of the various sucker 'rods and tend to keep These' arms are disposed so that their hook them 'in alignment with each other during I their reciprocatory motion.

By the use of this coupling the life of the sucker rod is greatly lengthened andthe op eration thereof is much easier so that less power is necessaryin their reoiprocation.: The coupling which. l have shown and described in detail relates to the preferred embodiment of the invention 'and itis to be understood that numerous changes may be made in the details ol construction and in the combination and arrangement of parts without departing'from the spirit of the invention as hereinafter claimed.

Having thus described my invention what l. A coupling of the class described including a socket, a stud threaded in the socket, a. head on the stud. arms pivoted to the head andprovided with hook extensions for engaging the socket, and rollers mounted on the arms. y

2. A coupling of the class descri in`v cluding two sections adapted to ne thread- L edly engaged with each Othmar, pair'of arms los' "013k mima provided naamw mms. 111mm dwg We? L?. 'ma wwreo" MEX Ymy sigma@ 'WALT-E' 

